- UnostudioX
- unostudiox
- UNOX
- UNPACKED
- Unpakt
- unparelld’aquitectes
- unPIZZO
- Unplugged Design inc.
- Unprofessional Studio
- Unqui Designers
- Un-real Studio
- UNRWA
- UNStudio
- UNTALLER
- UNTERCIO
- Unternehmen Form
- UNTERNEHMENFORM
- UNTES HEATING VENTILATING AIR CONDITIONING INC.
- untitled architecture
- UNU 12
- UNUCI
- Unusual Studio
- Unversità di Padova
- Uny System